What is a small computer system interface (SCSI) device?

Welcome Delta Sigma Pi

  • Accessibility
  • Sales:

    Home:

    1-800-426-7235

    Business:

    1-866-426-0911

    Chat Now >

    Visit Sales Support Page >


    Order Support:

    Order Lookup >

    Visit Order Support Page >

    Technical Support >

Lenovo
All
  • All
  • Laptops
  • Desktops
  • Workstations
  • Monitors
  • PC Accessories & Electronics
  • Tablets
  • Servers & Storage
  • Servers Accessories
  • Sign In / Create Account
    My Lenovo Account
    Keep track of your wishlist, orders, and rewards all in one place
    Sign In / Create Account
    Welcome Back!
    Access your order, subscriptions, saved carts, rewards balance, and profile
    View My Account
    Orders
    View & track your orders
    Rewards
    Earn & redeem Rewards
    Profile
    Edit name, password, and account settings
    Wishlist
    Manage a wishlist of your favorite products
    Products
    Manage your devices, accessories
    Product Registration
    Register your product and/or update your warranty dates
    Sign Out
  • My Lenovo Rewards
  • Cart
  • Products
  • Solutions
  • Services
  • Support
  • About Lenovo
  • Deals
  • Student
  • Gaming
  • AI
  • Digital Workplace
  • Hybrid Cloud
  • Edge
  • Sustainability
  • TruScale
  • Solutions by Industry
  • Alliance Partners
  • Other Solutions
  • Resources
TEMPORARILY UNAVAILABLE
DISCONTINUED
Temporary Unavailable
Cooming Soon!
. Additional units will be charged at the non-eCoupon price. Purchase additional now
We're sorry, the maximum quantity you are able to buy at this amazing eCoupon price is
Sign in or Create an Account to Save Your Cart!
Sign in or Create an Account to Join Rewards
View Cart
Remove
Your cart is empty! Don’t miss out on the latest products and savings — find your next favorite laptop, PC, or accessory today.
item(s) in cart
Some items in your cart are no longer available. Please visit cart for more details.
has been deleted
Please review your cart as items have changed.
of
Contains Add-ons
Subtotal
Proceed to Checkout
Yes
No
Popular Searches
What are you looking for today ?
Trending
Recent Searches
Items
All
Cancel
Top Suggestions
View All >
Starting at
  • Black Friday in July! Limited-time Doorbusters + Buy more, Save more!  Shop Now >

  • My Lenovo Rewards! Earn 3%-9% in rewards and get free expedited delivery on select products. Join for Free >

  • Buy online, pick up select products at Best Buy. Shop Pick Up >

  • Lease-to-own today with Katapult. Get started with an initial lease payment as low as $1! * Learn More >

Home > Glossary > What is a small computer system interface (SCSI) device?
Glossary Hero
Learn More
StarStar

Annual Sale

Lenovo Laptop SaleLenovo Laptop Sale

Laptop Deals

Desktop DealsDesktop Deals

Desktop Deals

Workstation DealsWorkstation Deals

Workstation Deals

StoreStore

Pick Up Today at Best Buy

ControllerController

Gaming PC & Accessory Deals

MouseMouse

PC Accessories & Electronics Deals

MonitorMonitor

Monitor Deals

Tablet and phoneTablet and phone

Tablets & Phones Deals

ServerServer

Server & Storage Deals

Discount tagDiscount tag

Clearance Sale


What is a small computer system interface (SCSI) device?

A SCSI device is a type of peripheral that connects to a computer using the SCSI standard. It enables you to expand your system's capabilities by adding devices like hard drives, scanners, or printers, providing a fast and efficient way to communicate between the computer and these peripherals.

How does a SCSI device differ from other connection types?

Unlike other interfaces, SCSI supports multiple devices on the same bus, offering greater flexibility in connecting peripherals. It also provides faster data transfer rates, making it suitable for high-performance applications like video editing or server environments.

Can I connect multiple SCSI devices to my computer?

Yes, one of the advantages of SCSI is its ability to support multiple devices on a single bus. This allows you to connect various peripherals, creating a daisy-chain configuration. Each device on the chain is assigned a unique SCSI ID, and the computer communicates with them individually, offering a convenient and efficient setup.

What is an SCSI ID and how is it assigned?

A SCSI ID is a unique identifier assigned to each device connected to the SCSI bus. IDs typically range from 0 to 7 or 0 to 15, depending on the SCSI version. You set the SCSI ID using jumpers or switches on the device. It's crucial to ensure that each connected device has a distinct ID to avoid conflicts and ensure proper communication.

How do I physically connect a SCSI device to my computer?

To connect a SCSI device, you need a SCSI cable that matches the connector type on both the device and the computer's SCSI controller. The cable connects the SCSI port on the computer to the SCSI port on the first device. If you have more devices, use additional cables to daisy-chain them. Ensure the devices are powered off before making connections.

Can I connect an SCSI device externally?

Yes, many SCSI devices come with external connectors, allowing you to connect them outside your computer. This is useful when you want to add peripherals without opening the computer case. External SCSI devices often use a different type of connector, so make sure you have the right cable for external connections.

What are the advantages of using SCSI over other interfaces?

SCSI offers several advantages, including support for multiple devices, fast data transfer rates, and a variety of supported peripherals. It's particularly beneficial in professional settings where high-performance and flexibility are crucial, such as video editing or server environments.

Are there different types of SCSI?

Yes, there are several SCSI standards, each offering different capabilities. SCSI-1 was the first standard, followed by SCSI-2, SCSI-3, and so on. The standards differ in terms of data transfer rates, supported devices, and features. When choosing a SCSI device, ensure it matches the SCSI standard supported by your computer's SCSI controller for optimal compatibility.

Can I use a SCSI device with modern computers?

While modern computers often don't come with built-in SCSI controllers, you can use SCSI devices with them using SCSI-to-USB adapters or SCSI host bus adapters (HBAs). These adapters allow you to connect SCSI devices to the computer's USB or PCI slots, maintaining compatibility with older peripherals.

What should I consider when troubleshooting SCSI connections?

If you encounter issues with your SCSI setup, first check the SCSI IDs to ensure each device has a unique identifier. Verify the cable connections, making sure they are secure and correctly daisy chained. Additionally, check for termination – ensure that the devices at each end of the chain have proper termination to prevent signal reflections and data errors.

How do I terminate the SCSI chain?

Termination is crucial in a SCSI setup to prevent signal reflections that can lead to data errors. Termination is typically applied at both ends of the SCSI chain. Most SCSI devices have a switch or jumper for termination, and the last device on the chain should be terminated. If the chain is too short, you might need an external terminator to maintain signal integrity.

What is SCSI parity?

SCSI parity is an error-checking mechanism that helps detect data corruption during transmission. It adds a parity bit to the data, allowing the system to identify and correct errors. Enabling SCSI parity is recommended for improved data integrity, especially in critical applications. Most SCSI devices and controllers support parity, and you can enable it through system settings.

Can I use SCSI for RAID configurations?

Yes, SCSI is a common interface for setting up redundant array of independent disks (RAID) configurations. RAID arrays provide data redundancy or performance improvements, depending on the RAID level. SCSI RAID controllers support various RAID setups, allowing you to create a reliable and high-performance storage solution for your computing needs.

How do I find out if my computer has a built-in SCSI controller?

Check your computer's specifications or user manual to determine if it includes a built-in SCSI controller. If not, you can use a SCSI host bus adapter (HBA) to add SCSI support. Many older computers had optional SCSI cards that could be installed, providing the necessary interface for connecting SCSI devices.

How can I troubleshoot the common issues with SCSI devices?

Common issues include SCSI ID conflicts, cable connection problems, and termination issues. To troubleshoot, ensure each device has a unique SCSI ID, check cable connections for security, and verify proper termination. Use diagnostic tools provided by your operating system to identify and address specific problems. Additionally, consult the documentation for your SCSI devices and controller for troubleshooting guidance.

Can I mix different types of SCSI devices on the same chain?

Yes, you can mix different types of SCSI devices on the same chain, as long as they all support the same SCSI standard. For example, you can connect SCSI-2 and SCSI-3 devices on a SCSI-3 chain. However, keep in mind that the chain's overall performance will be limited by the slowest device on it. It's advisable to use devices with similar data transfer rates for optimal performance.

How do I check the performance of my SCSI devices?

To check the performance of your SCSI devices, you can use benchmarking tools designed for storage devices. These tools measure the data transfer rates, access times, and overall performance of your SCSI devices. By comparing the benchmark results, you can identify any potential performance issues and make informed decisions about optimizing your SCSI setup.

Can I use a SCSI device with a modern operating system?

Yes, you can use a SCSI device with a modern operating system, but you may need to install drivers or ensure that the operating system has built-in support for your SCSI controller. Check the documentation for your operating system and the website for SCSI drivers. Many modern operating systems include generic SCSI drivers, but it's always best to confirm compatibility for seamless integration.

Looking for a Great Deal?
Shop Lenovo.com for great deals on A+ Education PCs, Accessories, Bundles and more.
Shop Deals Now

  • Legion 7i Gen 9 (16″ Intel) Gaming Laptop
    Starting at
    $1,699.99
    Learn More
  • ThinkPad X9 15 Aura Edition (15ʺ Intel) Laptop
    Starting at
    $1,127.97
    Learn More
  • Yoga Book 9i (13” Intel)
    Starting at
    $1,999.99
    Learn More
  • Yoga 9i 2-in-1 Aura Edition (14″ Intel) Laptop
    Starting at
    $1,439.99
    Learn More
  • ThinkPad P1 Gen 7 (16″ Intel) Mobile Workstation
    Starting at
    $1,871.22
    Learn More
  • Shop
    • Student Deals
    • K-12 Student Laptops
    • Student Accessories
    • Laptops by Major
    Education resource
    Explore
    • What is STEM?
    • Best Laptops for College
    • Student & Teacher Discounts
    • Lenovo Sustainability Programs
    Education carry case

    Stem Articles
    See All STEM Articles
    • Online STEM Education

    • STEM Career Tips & Resources

    • Women in STEM

    • STEM Educator Training

    • STEM Grants & Funding

    • STEM Education: Coding for Kids

    • STEM Education: Robotics

    • STEM Education: Biotechnology

    • STEM Education: Sustainability

    • STEM Education: AI & ML

    While every effort has been made to ensure accuracy, this glossary is provided for reference purposes only and may contain errors or inaccuracies. It serves as a general resource for understanding commonly used terms and concepts. For precise information or assistance regarding our products, we recommend visiting our dedicated support site, where our team is readily available to address any questions or concerns you may have.

    Why Lenovo?

    Go Greener with Leno...

    Lenovo is committed to Smarter Climate Action with lower energy laptops, use of sustainable materials and packaging, and available CO2 Offset Services.
    Learn More
    pastel background

    Get It Now, Pay For ...

    Lenovo has multiple financing option: the Lenovo Credit Card, installment plans, and lease-to-own financing op...
    Learn More
    pastel background

    Productivity & Peace of Mind

    Stay productive with Premium Care Plus - 24/7 priority support and coverage against accidental damage. Power through your day with our Smart Performance and extended battery solutions.
    Learn More
    pastel background

    Fast & Secure

    Get the most from your laptop with Lenovo’s state-of-the-art Smart Performance, delivering powerful, all-in-on...
    Learn More
    pastel background

    Assistance and Suppo...

    Chat with a trained professional who can help you find the right products, place or check on an order, or setup your Education laptop.
    Contact Us
    pastel background
    Enter email to receive Lenovo marketing and promotional emails. Review our Privacy Statement for more details.
    Please enter the correct email address!
    Email address is required
    • Facebook
    • Twitter
    • Youtube
    • Pinterest
    • TikTok
    • Instagram
    Select Country / Region:
    Country
    AndroidIOS

    About Lenovo

    • Our Company
    • News
    • Investors Relations
    • Compliance
    • ESG
    • Product Recycling
    • Product Security
    • Product Recalls
    • Executive Briefing Center
    • Lenovo Cares
    • Careers
    • Formula 1 Partnership

    Products & Services

    • Laptops & Ultrabooks
    • Smarter AI for You
    • Desktop Computers
    • Workstations
    • Gaming
    • Tablets
    • Servers, Storage, & Networking
    • Accessories & Software
    • Services & Warranty
    • Product FAQs
    • Outlet
    • Deals
    • Lenovo Coupons
    • Cloud Security Software
    • Windows 11 Upgrade

    Resources

    • Legion Gaming Community
    • Lenovo EDU Community
    • Lenovo Pro Community
    • Lenovo Pro for Business
    • My Lenovo Rewards
    • Lenovo Financing
    • Lenovo Trade-in
    • Affiliate Program
    • Affinity Program
    • Employee Purchase Program
    • Lenovo Partner Hub
    • Laptop Buying Guide
    • Where to Buy
    • Glossary

    Customer Support

    • Contact Us
    • Policy FAQs
    • Return Policy
    • Shipping Information
    • Order Lookup
    • Register a Product
    • Replacement Parts
    • Technical Support
    • Forums
    • Provide Feedback
    © 2025 Lenovo. All rights reserved.
    PrivacyCookie Consent ToolSite MapTerms of UseExternal Submission PolicySales terms and conditionsAnti-Slavery and Human Trafficking Statement
    Compare  ()
    x
    Call

    Need Help? Call: 

    1-800-426-7235
    Select Your Store
    Add items to your cart?
    We've noticed that you've entered a different store. Do you want to add these items to your cart in the new store?
    No Yes. Add in Lenovo Pro

    close_icon

    Sign up and receive up to $100
    off your next purchase.
    Click here for offer details
    Are you shopping for a business?

    No, Thanks

    Click here for offer details
    *Offer valid for new subscribers only. Not valid on previous purchases.
    Lenovo Privacy Policy
    Thanks for signing up!
    You should receive an email from us within the next 2 hours
    *Offer valid for new subscribers only. Not valid on previous purchases.
    Lenovo Privacy Policy
    An error occurred while submitting your request.
    Please try again later.